I hope you enjoy your trip and the weather stays hospitable. If you have not been to Nice since 2011, you will be amazed at the transformation of the center (and it is ongoing). You still have a lot to see -- Antibes, Cannes/Leyrins, St. Paul de Vence/Vence/Touretttes sur Loup/Gourdon, Eze/La Turbie, Train des Merveilles, Menton, etc
Here's the gouvernment.fr site with info by department (as an alternative to the above, and to reinforce what BETS said):
Link
The Alpes Maritimes is at 107 cases per 7 days per 100K. 90% of adults are fully vaccinated. The higher level of vaccinations, masking and pass has helped, it appears. There has been no spike since the holidays and rentree, unlike last year.
I'm back stateside but in August things were a bit crowded and the infection level higher. Apparently, the CdA saw a better tourism year than 2019, but with more EU and French than normal. I felt safer in France with all the precautions than I did in the US and now is even better.